Cesium carbonate → HCID 67499459, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 3-(4-iodo-3-methyl-1H-pyrazol-1-yl)pyridine (2.0 g, 7.02 mmol) in dimethylsulfoxide (7.02 ml) was added 1-(5,6,7,8-tetrahydroquinolin-8-yl)ethanone (0.246 g, 1.403 mmol), cyclopropanamine (0.486 ml, 7.02 mmol), cesium carbonate (6.86 g, 21.05 mmol) and copper(I) bromide (0.101 g, 0.702 mmol). The reaction mixture was stirred at 35° C. for 2 days. The reaction mixture was diluted with water and extracted with dichloromethane. The combined organics were washed with brine, concentrated and chromatographed (0-100% ethyl acetate/hexanes) to give N-cyclopropyl-3-methyl-1-(pyridin-3-yl)-1H-pyrazol-4-amine (269 mg, 1.255 mmol, 17.90%) as a yellow solid: mp 104.0-107.0° C.; 1H NMR (400 MHz, CDCl3) δ 8.89 (dd, J=2.7, 0.5 Hz, 1H), 8.41 (dd, J=4.7, 1.4 Hz, 1H), 7.96 (ddd, J=8.3, 2.7, 1.5 Hz, 1H), 7.51 (s, 1H), 7.33 (ddd, J=8.3, 4.7, 0.7 Hz, 1H), 3.42 (s, 1H), 2.53-2.42 (m, 1H), 2.22 (s, 3H), 0.72-0.65 (m, 2H), 0.60-0.53 (m, 2H); ESIMS m/z 215 ([M+H]+).

Provenance & Evidence